Free trolley system
United States Patent 2344155

Inventors:
Mcbride, Jesse E.
Landahl, Eugene E.
Publication Date:
03/14/1944
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Assignee:
PALMER BEE COMPANY
Primary Class:
104/91
Other Classes:
104/88.010, 104/88.020
International Classes:
B61B10/02; B61B10/00